KR100332746B1 - Picture-by-picture system of television receiver - Google Patents
Picture-by-picture system of television receiver Download PDFInfo
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- KR100332746B1 KR100332746B1 KR1019940033713A KR19940033713A KR100332746B1 KR 100332746 B1 KR100332746 B1 KR 100332746B1 KR 1019940033713 A KR1019940033713 A KR 1019940033713A KR 19940033713 A KR19940033713 A KR 19940033713A KR 100332746 B1 KR100332746 B1 KR 100332746B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3147—Multi-projection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
- H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
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- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Systems (AREA)
Abstract
Description
본 발명은 텔레비젼수상기에서 확장된피아이피(PIP: Picture In Picture)개념으로 픽쳐 바이 픽쳐(Picture by Picture) 기능을 구현하는 기술에 관한 것으로, 특히 동일한 크기의 화상을 각각 독립적인 방법으로 처리하고 독립적인 편향부를 이용하여 화질의 열화 없이 더블 스크린을 구현하는데 적당하도록한 텔레비젼수상기의 픽쳐 바이 픽쳐 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for implementing a picture by picture (PIP) concept in an expanded picture in picture (PIP) concept in a television receiver, and in particular, processes images of the same size by independent methods and independently. The present invention relates to a picture-by-picture apparatus of a television receiver adapted to realize a double screen without deterioration of image quality using an in-deflection unit.
일반적인 텔레비젼 수상기의 픽쳐 바이 픽쳐 장치에 있어서는 수평방향으로 해상도가절반 가까이 떨어지는 결함이 있고,더욱이 화면이 대형일 경우 화면의 밝기가 떨어지는 문제점이 있었다. 또한, 2개 화면의 방송 방식이 서로 상이할 경우 예로써, PAL, NTSC, SECAM 방송신호중 임의의 두 방송신호를동일한 화면상에 디스플레이하는 경우 1 프레임의 수평라인수가 서로 다르기 때문에 별도의 복잡한 처리과정을 필요로 하므로 그에 따른 비용이 상승되고, 하나의 화면에 대해 동일한 편향신호를 사용하게 되므로 수직 해상도가 저하되는 문제점이 있었다.In the picture-by-picture apparatus of a general television receiver, there is a defect in which the resolution drops to about half in the horizontal direction, and furthermore, when the screen is large, the brightness of the screen is lowered. In addition, when two broadcasting screens are different from each other, for example, when displaying any two broadcasting signals among PAL, NTSC, and SECAM broadcasting signals on the same screen, the number of horizontal lines of one frame is different so that separate processing is complicated. Since it requires a process, the cost is increased, and since the same deflection signal is used for one screen, there is a problem in that the vertical resolution is lowered.
따라서, 본 발명의 목적은 각각 독립적인 두개의 영상신호 처리부에 각각의 편향부를 부가한 픽쳐 바이 픽쳐 장치에 관한 것이다.Accordingly, an object of the present invention relates to a picture by picture apparatus in which each deflection unit is added to two independent image signal processing units.
제1도는 본 발명 텔레비젼수상기의 픽쳐 바이 픽쳐 장치의 블록도로서 이에 도시한 바와 같이, 제1고주파영상신호(RF1)를 처리하여 선택된 채널의 영상중간주파수신호(IF 1 )를 검출해내는 튜너(101)와, 상기 영상중간주파수신호(IF 1 )를 복조처리하여 복합영상신호(VIDEO1)를 복원하는 영상복조부(102)와, 상기 복원된 복합영상신호(VIDEO1)를 필터링하여 휘도신호(Y)와 색신호(C)를 분리해내는 휘도/색신호 분리부(103)와, 상기 색신호(C)를 변환하여 색차신호(U),(V)를 생성하는 색신호 복조부(104)와, 상기 휘도신호(Y) 및 색차신호(U),(V)를 공급받아 적,녹,청색용 신호(R),(G),(B)를 생성하는 휘도/색차신호 매트릭스(105)와, 상기 적,녹,청색용 신호(R),(G), (B)를 디스플레이하는데 적당한 수준으로 증폭하는 색신호 증폭부(106)와, 상기 복합영상신호(VIDEO1)를 공급받아 플라이백신호에 동기된 수평구동신호(H0)와 수직구동신호(V0)를 생성하는 동기/편향신호 출력부(107)와, 상기 동기/편향 신호 출력부(107)에서 출력되는 수평,수직구동신호(H0),(V0)를 각기 공급받아 수평편향코일을 구동시키기에 적당한 수준으로 증폭하는 수평편향신호 증폭부(108) 및 수직편향신호 증폭부(109)와, 상기 색신호증폭부(106)에서 증폭출력되는 적,녹,청색용 신호(R0),(G0), (B0)를 상기 수평편향신호 증폭부(108) 및 수직편향신호 증폭부(109)의 편향출력에 따라 스크린(300)상에 디스플레이하기 위한 적,녹,청색용 씨알티(110),(111),(112)로 제1영상신호 처리부(100)를 구성하고, 제2고주파영상신호(RF2)를 상기 제1영상신호 처리부(100)같이 처리하기 위해 그 제1영상신호 처리부(100)와 동일한 구성의 제2영상신호 처리부(200)를 더 구비하여 구성한 것으로, 이와 같이 구성한 본 발명의 작용 및 효과를 첨부한 제2도 및 제3도를 참조하여 설명하면 다음과 같다.First turning tuner that year, as this shown as a block diagram of a picture-by-picture unit of the present invention, a television receiver, the first to process the high-frequency image signal (RF 1) detecting the video intermediate frequency signal (IF 1) of the selected channel 101, the video intermediate frequency signal (IF 1), the demodulation process to filter the composite video signal (vIDEO 1) video demodulator 102, the restored composite video signal (vIDEO 1) of restoring the brightness A luminance / color signal separator 103 for separating the signal Y and the color signal C, a color signal demodulator 104 for converting the color signal C to generate color difference signals U and V, and And a luminance / color difference signal matrix 105 which receives the luminance signal Y, the color difference signals U, and V, and generates red, green, and blue signals R, G, and B. , the signal (R) for the red, green, blue, (G), receives the color signal supplied to the amplification unit 106 and the composite video signal (vIDEO 1) for amplifying a safe level for displaying (B) Level output from the synchronized fly baeksinho horizontal drive signal (H 0) and a vertical drive signal (V 0), the synchronization / deflection signal output unit 107 for generating the synchronization / deflection signal output unit 107, a vertical A horizontal deflection signal amplifier 108 and a vertical deflection signal amplifier 109 for amplifying the driving signals H 0 and V 0 to a level suitable for driving a horizontal deflection coil; and the color signal amplifier Red, green, and blue signals (R 0 ), (G 0 ), (B 0 ) amplified and output from 106 are deflected outputs of the horizontal deflection signal amplification unit 108 and the vertical deflection signal amplification unit 109. The first video signal processor 100 is composed of the CRTs 110, 111, and 112 for red, green, and blue for display on the screen 300, and the second high frequency video signal RF 2) the first image signal processor to process steps 100, the first image signal processing section (configured by further comprising a second video signal processor 200 of the same configuration as that of 100) As it will be described with reference to acts and a second attachment also the effect of the invention and FIG 3 is configured as described above as follows.
먼저, 제1영상신호 처리부(100)의 작용을 설명하면, 제1고주파영상신호(RF1)가 튜너(101)에 공급되어 이로부터 선택된 채널의 중간주파수신호(IF1)가 출력되고, 이는 영상복조부(102)에서 영상복조과정을 통해 복합복합영상신호(VIDEO1)가 복원되며, 그 복원된 복합복합영상신호(VIDEO1)는 다시 휘도/색신호 분리부(103)에 공급되어 휘도신호(Y)와 색신호(C)가 분리된다.First, referring to the operation of the first image signal processing unit 100, the first high frequency image signal RF 1 is supplied to the tuner 101 and the intermediate frequency signal IF 1 of the channel selected therefrom is output. In the image demodulator 102, the composite composite video signal VIDEO 1 is restored through the image demodulation process, and the restored composite composite video signal VIDEO 1 is supplied to the luminance / color signal separation unit 103 again to receive the luminance signal. (Y) and the color signal C are separated.
또한, 상기 분리된 색신호(C)가 색신호 복조부(104)를 통해 색차신호(U),(V)로 변환된 후 상기 분리된 휘도신호(Y)와 함께 휘도/색차신호 매트릭스(105)에 공급되어 이로부터 적,녹,청색용 신호(R),(G),(B)가 출력되고, 이는 색신호 증폭부(106)에 의해 디스플레이하는데 적당한 크기로 증폭된 다음 그 증폭된 적,녹,청색용 신호(R0),(G0),(B0)가 적색용 씨알티(110),녹색용 씨알티(111),청색용 씨알티(112)에 각기 공급된다.In addition, the separated color signal C is converted into the color difference signals U and V through the color signal demodulator 104, and is then added to the luminance / color difference signal matrix 105 together with the separated luminance signal Y. The red, green, and blue signals (R), (G), and (B) are output from the same, which are amplified to a size suitable for display by the color signal amplifier 106, and then the amplified red, green, The blue signals R 0 , G 0 , and B 0 are supplied to the red Citi 110, the green Citi 111, and the blue CRT 112, respectively.
이때, 상기 각각의 씨알티(110),(111),(112)에서 디스플레이되는 영상은 동일한 수평,수직편향신호에 의해 편향되도록 하였는데, 이를 위한 수평,수직편향신호(H),(V)의 출력과정을 설명하면 하기와 같다.At this time, the images displayed in each of the CTs 110, 111, and 112 are deflected by the same horizontal and vertical deflection signals, and the horizontal, vertical deflection signals H, and V for this purpose. The output process is as follows.
상기 영상복조부(102)에서 출력되는 복합복합영상신호(VIDEO1)가 다른 한편으로는 동기/편향신호 출력부(107)에 공급되어 수평플라이백신호(HFB)에 동기된 수평구동신호(H0)와 수직플라이백신호(VFB)에 동기된 수직구동신호(V0)가 출력된다.The video demodulator compound composite video signal (VIDEO 1) is on the other hand synchronization / deflection signal output is supplied to the (107) synchronized to the horizontal fly baeksinho (HFB) horizontal drive signals outputted from the (102) (H 0 ) And a vertical drive signal V 0 synchronized with the vertical flyback signal VFB are output.
그리고, 상기 수평구동신호(H0)는 수평편향신호 증폭부(108)를 통해 수평편향코일을 구동시키기에 적당한 수준으로 증폭출력되고, 수직구동신호(V0) 또한 수직편향신호 증폭부(109)를 통해 수직편향코일을 구동시키기에 적당한 수준으로 증폭출력된다.The horizontal drive signal H 0 is amplified and output to a level suitable for driving the horizontal deflection coil through the horizontal deflection signal amplifier 108, and the vertical drive signal V 0 is also a vertical deflection signal amplification unit 109. ) Is amplified and output to a level suitable to drive the vertical deflection coil.
이에 따라 상기 적,녹,청색용 씨알티(110-112)를 통해 출력되는 영상이 상기 수평편향신호 출력부(108)에서 출력되는 수평구동신호(H)와 수평편향신호 출력부(109)에서 출력되는 수직구동신호(V)에 의해 편향되어 스크린(300)에는 제2도의오른쪽화면과 같은 영역의 화면이 디스플레이 된다.Accordingly, the horizontal output signal H and the horizontal deflection signal output unit 109 output the image output through the red, green, and blue CRTs 110-112 from the horizontal deflection signal output unit 108. The screen 300 is displayed on the screen 300 as shown in the right screen of FIG.
단, 제2도에서와 같이 절반의 영역 즉, 스크린(300)중앙에서 우측 끝까지의 영역에 복합영상신호(VIDEO1)를 디스플레이하기에 적당하도록 상기 수평,수직구동신호(H),(V)가 생성되어야 하며, 이때, 하나의 화면에서 복합영상신호(VIDEO1)의 화면비를 유지하기 위해서는 수직편향도 그만큼 좁혀져야 한다.However, as shown in FIG. 2, the horizontal and vertical driving signals H and V are suitable to display the composite video signal VIDEO 1 in half of the area, that is, from the center to the right end of the screen 300. In this case, in order to maintain the aspect ratio of the composite video signal VIDEO 1 in one screen, the vertical deflection must be narrowed by that much.
한편, 제2영상신호 처리부(200)는 제2고주파영상신호(RF2)를 대상으로 상기 제1영상처리부(100)에서 제1고주파영상신호(RF1)를 처리하는 것과 같이 처리하게 되고, 이렇게 처리된 복합영상신호(VIDEO2)를 제2도의 스크린상(300)에서 나머지 절반의 영역 즉, 스크린(300)의 좌측 끝단에서 부터 중앙까지의 영역에 디스플레이하기에 적당하도록 수평편향신호 증폭부(208)에서 출력되는 수평구동신호(H)와 수직편향신호 증폭부(209)에서 출력되는 수직구동신호(V)를 생성하여야 한다.On the other hand, the second image signal processor 200 is handled such as to process the first high-frequency image signal (RF 1) in the first image processing unit 100 intended for the second high-frequency image signal (RF 2), The horizontal deflection signal amplifying unit is suitable for displaying the composite video signal VIDEO 2 thus processed in the remaining half of the screen 300 of FIG. 2 , that is, the area from the left end to the center of the screen 300. The horizontal drive signal H output from 208 and the vertical drive signal V output from the vertical deflection signal amplifying unit 209 should be generated.
그러나, 스크린(300) 전체에 하나의 동화상만을 디스플레이하고자 하는 경우 즉, 복합영상신호(VIDEO1)나 복합영상신호(VIDEO2) 중에서 하나의 복합영상신호만을 디스플레이하고자 하는 경우 상기 제1복합영상신호 처리부(100)나 제2복합영상신호처리부(200) 중에서 하나만을 구동시키고, 이때의 수평편향을 위한 수평구동신호는상기와 달리 스크린(300)의 좌측 끝단에서 부터 우측 끝단까지 즉, 화면 전체를 편향시킬 수 있도록 출력한다.However, when only one moving image is to be displayed on the entire screen 300, that is, when only one composite video signal of the composite video signal VIDEO 1 or composite video signal VIDEO 2 is to be displayed, the first composite video signal is displayed. Drive only one of the processing unit 100 or the second composite image signal processing unit 200, and the horizontal drive signal for the horizontal deflection at this time is different from the left end to the right end of the screen 300, that is, the entire screen Output for deflection.
본 발명의 다른 적용 예로써, 디스플레이장치가 엘씨디(LCD)일 경우에도 상기와 같이 화면을 두개로 분리하여 동화상을 디스플레이할 수 있게 된다.As another application example of the present invention, even when the display device is an LCD (LCD), it is possible to display a moving image by separating the screen into two as described above.
이상에서 상세히 설명한 바와 같이, 본 발명은 두개의 영상입력을 별도의 영상 신호 처리부를 통해 처리하고, 각각의 영상신호 처리부에 독립적으로 편향부를 구비하여 픽쳐 바이 픽쳐 즉, 더블스크린을 구현하도록 편향신호를 발생함으로써 2개의 동화상을 왜곡없이디스플레이할수 있는 효과가 있고, 신호성분은 주파수 특성이 변화되지 않고 편향으로만 수평,수직방향으로 줄여줌으로써 해상도가 뛰어나고 화면의 밝기도 2배로 높일 수 있는 효과가 있다.As described in detail above, the present invention processes two image inputs through separate image signal processing units, and includes a deflection unit independently for each image signal processing unit to implement a deflection signal to implement a picture by picture, that is, a double screen. It is possible to display two moving images without distortion by generating them, and the signal component is reduced in the horizontal and vertical directions only by deflection without changing the frequency characteristic, so that the resolution is excellent and the brightness of the screen can be doubled. .
제1도는 본 발명 텔레비젼수상기의 픽쳐 바이 픽쳐 장치의 블록도.1 is a block diagram of a picture by picture apparatus of a television receiver according to the present invention;
제2도는 본 발명에 의한 픽쳐 바이 픽쳐의 디스플레이 예시도.2 is a diagram illustrating display of a picture by picture according to the present invention.
제3도는 제1도에서 제1,2영상신호 처리부의 수평편향신호 출력파형도.3 is a horizontal deflection signal output waveform diagram of the first and second image signal processing units of FIG.
*** 도면의 주요부분에 대한 부호의 설명 ****** Explanation of symbols for main parts of drawing ***
100 : 제1영상신호 처리부 101 : 튜너100: first video signal processor 101: tuner
102 : 영상복조부 103 : 휘도/색신호 분리부102: image demodulation unit 103: luminance / color signal separation unit
104 : 색신호 복조부 105 : 휘도/색차신호 매트릭스104: color signal demodulator 105: luminance / color difference signal matrix
106 : 색신호 증폭부 107 : 동기/편향신호 출력부106: color signal amplifier 107: synchronization / deflection signal output unit
108 : 수평편향신호 증폭부 109 : 수직편향신호 증폭부108: horizontal deflection signal amplifying unit 109: vertical deflection signal amplifying unit
110 : 적색용 씨알티 111 : 녹색용 씨알티110: red dragon Citity 111: green dragon Citi
112 : 청색용 씨알티 200 : 제2영상신호 처리부112: blue CALTI 200: second video signal processor
300 : 스크린300: screen
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940033713A KR100332746B1 (en) | 1994-12-12 | 1994-12-12 | Picture-by-picture system of television receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940033713A KR100332746B1 (en) | 1994-12-12 | 1994-12-12 | Picture-by-picture system of television receiver |
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| Publication Number | Publication Date |
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| KR960028287A KR960028287A (en) | 1996-07-22 |
| KR100332746B1 true KR100332746B1 (en) | 2002-08-28 |
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| KR1019940033713A KR100332746B1 (en) | 1994-12-12 | 1994-12-12 | Picture-by-picture system of television receiver |
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| KR100510653B1 (en) * | 2002-10-11 | 2005-08-31 | 엘지전자 주식회사 | Apparatus for correcting image distortion in digital TV |
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